PHP Mode for Emacs Code

(php-check-html-for-indentation): Change regular
expression for indentation warning to match only HTML at the
*beginning* of the line.

(php-constants): Add date and time constants of PHP.
Submitted by Dias Badekas.

(Indentation): PHP mode's indentation rules are
inherited from C mode, not the PEAR coding standards by default.
Explain when PEAR indentation is on.
(Indentation, Motion, Completion, Embedded HTML): Modify various
concept index entries.
(Completion, Index Menu): Use "its" when describing the value of a
variable.

(php-mode): Add "\s *" after "&?" in
defun-prompt-regexp, since functions can have an ampersand before
the identifier with whitespace added.
(php-speedbar-config, php-mode-speedbar-open, php-manual-url)
(php-mode-force-pear): Remove backslash that causes continuation
of the line in docstrings.

(Completion): Give example of making a
php-completion-file from the PHP manual HTMl files.
(Change Logs): Add index entries to this section.
(Customization): Add notes as source code comments about what
should be documented in this section.

Commit rest of changes intended for 2008-04-12 fixes.

Make grammatical throughout document.
(Introduction): Add description of intended audience.
(Editing): Document mark-defun, narrow-to-defun and widen.
(Contributors): Add Aaron Iba.

Insert various comments for maintaining the
manual.

Update modification date to today's date.

(php-font-lock-keywords-1, php-font-lock-keywords-2): Add [^_$] to
beginning and [^_] to end of font-lock regular expressions to
avoid false matches in user variable and function names. Affects
highlighting of self, parent, print, break, case, continue, other
keywords and internal constants.